The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9ebdc8f4f86554492a1a368db16a01e1d9174b45

commit 9ebdc8f4f86554492a1a368db16a01e1d9174b45
Author: Takumi Fujimoto <takumif@chromium.org>
Date: Fri Aug 31 15:50:50 2018

Add an item to media router context menu for media remoting

Add an item labelled "Optimize fullscreen videos" to the context menu
of the Cast toolbar icon behind the ViewsCastDialog flag. Toggling
this enables/disables media remoting.

Bug:  878540 
Change-Id: Ic1003d6ee9e38bd87d9807aa69e5ef5d23e9b637
Reviewed-on: https://chromium-review.googlesource.com/1194972
Reviewed-by: Greg Thompson <grt@chromium.org>
Reviewed-by: Derek Cheng <imcheng@chromium.org>
Commit-Queue: Takumi Fujimoto <takumif@chromium.org>
Cr-Commit-Position: refs/heads/master@{#588036}
[modify] https://crrev.com/9ebdc8f4f86554492a1a368db16a01e1d9174b45/chrome/app/chrome_command_ids.h
[modify] https://crrev.com/9ebdc8f4f86554492a1a368db16a01e1d9174b45/chrome/app/media_router_strings.grdp
[modify] https://crrev.com/9ebdc8f4f86554492a1a368db16a01e1d9174b45/chrome/browser/ui/toolbar/media_router_contextual_menu.cc
[modify] https://crrev.com/9ebdc8f4f86554492a1a368db16a01e1d9174b45/chrome/browser/ui/toolbar/media_router_contextual_menu.h
[modify] https://crrev.com/9ebdc8f4f86554492a1a368db16a01e1d9174b45/chrome/browser/ui/toolbar/media_router_contextual_menu_unittest.cc